package com.xuecheng.content.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.xuecheng.base.execption.XueChengPlusException;
import com.xuecheng.base.model.PageParams;
import com.xuecheng.base.model.PageResult;
import com.xuecheng.content.mapper.CourseBaseMapper;
import com.xuecheng.content.mapper.CourseCategoryMapper;
import com.xuecheng.content.mapper.CourseMarketMapper;
import com.xuecheng.content.model.dto.AddCourseDto;
import com.xuecheng.content.model.dto.CourseBaseInfoDto;
import com.xuecheng.content.model.dto.EditCourseDto;
import com.xuecheng.content.model.dto.QueryCourseParamsDto;
import com.xuecheng.content.model.po.CourseBase;
import com.xuecheng.content.model.po.CourseCategory;
import com.xuecheng.content.model.po.CourseMarket;
import com.xuecheng.content.service.CourseBaseInfoService;
import lombok.Data;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.time.LocalDateTime;
import java.util.List;


@Service
@Slf4j
public class CourseBaseInfoServiceImpl implements CourseBaseInfoService {
    @Autowired
    private CourseBaseMapper courseBaseMapper;

    @Autowired
    CourseMarketMapper courseMarketMapper;


    @Autowired
    CourseCategoryMapper courseCategoryMapper;
    @Override
    public PageResult<CourseBase> queryCourseBaseList(PageParams pageParams, QueryCourseParamsDto queryCourseParamsDto) {
        //拼装查询条件
        LambdaQueryWrapper<CourseBase> queryWrapper = new LambdaQueryWrapper<>();

        //根据名称模糊查询，在sql中拼接course_base.name like '%值%'
        queryWrapper.like(StringUtils.isNotEmpty(queryCourseParamsDto.getCourseName()),CourseBase::getName,queryCourseParamsDto.getCourseName());

        //构建查询条件，根据课程审核状态查询
        queryWrapper.eq(StringUtils.isNotEmpty(queryCourseParamsDto.getAuditStatus()),CourseBase::getAuditStatus,queryCourseParamsDto.getAuditStatus());
        //构建查询条件，根据课程发布状态查询
        queryWrapper.eq(StringUtils.isNotEmpty(queryCourseParamsDto.getPublishStatus()),CourseBase::getStatus,queryCourseParamsDto.getPublishStatus());
        //分页对象

        Page<CourseBase> page = new Page<>(pageParams.getPageNo(), pageParams.getPageSize());

        // 查询数据内容获得结果
        Page<CourseBase> courseBasePage = courseBaseMapper.selectPage(page, queryWrapper);
        // 获取数据列表
        List<CourseBase> list = courseBasePage.getRecords();
        // 获取数据总数
        long total = courseBasePage.getTotal();

        // 构建结果集
        PageResult<CourseBase> courseBasePageResult = new PageResult<>(list, total, pageParams.getPageNo(), pageParams.getPageSize());
        return courseBasePageResult;
    }
    @Transactional
    @Override
    public CourseBaseInfoDto createCourseBase(Long companyId, AddCourseDto dto) {

//        //数据的合法校验
//        if (StringUtils.isBlank(dto.getName())) {
//            XueChengPlusException.cast("课程名称为空");
//
//        }
//
//        if (StringUtils.isBlank(dto.getMt())) {
//            throw new RuntimeException("课程分类为空");
//        }
//
//        if (StringUtils.isBlank(dto.getSt())) {
//            throw new RuntimeException("课程分类为空");
//        }
//
//        if (StringUtils.isBlank(dto.getGrade())) {
//            throw new RuntimeException("课程等级为空");
//        }
//
//        if (StringUtils.isBlank(dto.getTeachmode())) {
//            throw new RuntimeException("教育模式为空");
//        }
//
//        if (StringUtils.isBlank(dto.getUsers())) {
//            throw new RuntimeException("适应人群为空");
//        }
//
//        if (StringUtils.isBlank(dto.getCharge())) {
//            throw new RuntimeException("收费规则为空");
//        }
        //新增对象
        CourseBase courseBaseNew = new CourseBase();
        //将填写的课程信息赋值给新增对象
        BeanUtils.copyProperties(dto,courseBaseNew);
        //设置审核状态
        courseBaseNew.setAuditStatus("202002");
        //设置发布状态
        courseBaseNew.setStatus("203001");
        //机构id
        courseBaseNew.setCompanyId(companyId);
        //添加时间
        courseBaseNew.setCreateDate(LocalDateTime.now());
        //插入课程基本信息表
        int insert = courseBaseMapper.insert(courseBaseNew);
        if(insert<=0){
            throw new RuntimeException("新增课程基本信息失败");
        }
        //todo:向课程营销表保存课程营销信息
        CourseMarket courseMarketNew = new CourseMarket();
        Long courseBaseNewId = courseBaseNew.getId();
        BeanUtils.copyProperties(dto,courseMarketNew);

        courseMarketNew.setId(courseBaseNewId);
        saveCourseMarket(courseMarketNew);
        //todo:查询课程基本信息及营销信息并返回

        return getCourseBaseInfo(courseBaseNewId);
    }

     //保存课程营销信息
    private int saveCourseMarket(CourseMarket courseMarketNew){
        //收费规则
        String charge = courseMarketNew.getCharge();

        if (StringUtils.isBlank(charge)){
            throw new RuntimeException("收费规则没有选择");
        }

        //收费规则为收费

        if (charge.equals("201001")){
            if (courseMarketNew.getPrice()==null||courseMarketNew.getPrice()<=0){
                throw new RuntimeException("课程为收费价格不能为空且必须大于0");
            }
        }
        //根据id从课程营销表查询
        CourseMarket courseMarket = courseMarketMapper.selectById(courseMarketNew.getId());

        if (courseMarket==null){
           return courseMarketMapper.insert(courseMarketNew);
        }
        else { //进行更新
            BeanUtils.copyProperties(courseMarketNew,courseMarket);
            courseMarket.setId(courseMarketNew.getId());
            return courseMarketMapper.updateById(courseMarket);
        }
    }




    //根据课程id查询课程基本信息，包括基本信息和营销信息
    public CourseBaseInfoDto getCourseBaseInfo(Long courseId){

        CourseBase courseBase = courseBaseMapper.selectById(courseId);
        if(courseBase == null){
            return null;
        }
        CourseMarket courseMarket = courseMarketMapper.selectById(courseId);
        CourseBaseInfoDto courseBaseInfoDto = new CourseBaseInfoDto();
        BeanUtils.copyProperties(courseBase,courseBaseInfoDto);
        if(courseMarket != null){
            BeanUtils.copyProperties(courseMarket,courseBaseInfoDto);
        }

        //查询分类名称
        CourseCategory courseCategoryBySt = courseCategoryMapper.selectById(courseBase.getSt());
        courseBaseInfoDto.setStName(courseCategoryBySt.getName());
        CourseCategory courseCategoryByMt = courseCategoryMapper.selectById(courseBase.getMt());
        courseBaseInfoDto.setMtName(courseCategoryByMt.getName());
        return courseBaseInfoDto;
    }

    @Override
    public CourseBaseInfoDto updateCourseInfo(Long companyId, EditCourseDto editCourseDto) {

        //拿到课程id

        Long courseId = editCourseDto.getId();
        //查询课程信息
        CourseBase courseBase = courseBaseMapper.selectById(courseId);

        if (courseBase==null){
            XueChengPlusException.cast("课程不存在");
        }
        //本机构只能修改本机构的课程信息

        if (!companyId.equals(courseBase.getCompanyId())){
            XueChengPlusException.cast("本机构只能修改本机构的课程信息");
        }
        //封装数据
        BeanUtils.copyProperties(editCourseDto,courseBase);
        //修改时间
        courseBase.setChangeDate(LocalDateTime.now());

        //更新课程基本信息
        int i = courseBaseMapper.updateById(courseBase);
        if (i<=0){
            XueChengPlusException.cast("修改课程失败");
        }
        //更新营销信息
        CourseMarket courseMarket = courseMarketMapper.selectById(courseId);

       BeanUtils.copyProperties(editCourseDto,courseMarket);

       saveCourseMarket(courseMarket);

        CourseBaseInfoDto courseBaseInfo = getCourseBaseInfo(courseId);
        return courseBaseInfo;
    }
}
